Question

what is Rapides? Answer fast

Answer 1

Rapids are sections of a river where the river bed has a relatively steep slope. its intensity ranges from a scale of 1-8,with 1 being the most navigable and 8 being the least gradient,causing an increase in water velocity and turbulonce.
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Answer 2

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Raphides are needle-shaped crystals of calcium oxalate monohydrate or calcium carbonate as aragonite, found in more than 200 families of plants. Both ends are needle-like, but raphides tend to be blunt at one end and sharp at the other.